The Literature of Arthropods Associated with Soybeans 
ill. A BIBLIOGRAPHY OF THE BEAN LEAF BEETLES 
Cerotoma trifurcata (Forster) and C. ruficornis (Olivier) 
(Coleoptera: Chrysomelidae) 
Two species of the genus Cerotoma Chevrolat, 
1837,’ are important agricultural pests and have be- 
come significant elements of the arthropod fauna asso- 
ciated with soybeans in the New World. C. trifurcata 
(Forster, 1771)? is the only species of the genus known 
to attack soybeans in the continental United States, 
while C. ruficornis (Olivier, 1791)? occurs primarily 
south of the United States. 
Both species are well defined taxonomically, and 
despite considerable variation in their color and pat- 
tern the synonymy is not extensive. The primary 
synonyms of C. trifurcata are C. caminea (Fabricius, 
1801), which appears frequently in the literature, 
and C. fibulata (Germar, 1824)*. Barber (1945)* lists 
C. denticornis (Fabricius, 1792)’ and C. sexpunctatus 
1See entry 97 in the bibliography. 
2See entry 121 in the bibliography. 
3See entry 256 in the bibliography. 
4See entry 114 in the bibliography. 
5 See entry 130 in the bibliography. 
6See entry 32 in the bibliography. 
7See entry 113 in the bibliography. 
M. P. Nichols, M. Kogan, and G. P. Waldbaue 
(Horn, 1872)* as the synonyms of C. ruficornis. He: 
zog (1968)? made a detailed study of the color vari: 
tions of C. trifurcata. 
The distribution of each species is known only i 
general terms. C. trifurcata is found from souther 
Canada to the Gulf states, extending from the Atla 
tic coast westward to South Dakota in the north an 
to Arizona in the south. It is also found in Pueri 
Rico. C. ruficornis is widely distributed in the We 
Indies and, on the mainland, occurs in Florida an 
Texas and from Mexico to northern Venezuela. 
Bean leaf beetles damage several growth stag 
of soybeans, with the amount of damage varying fro 
region to region according to the phenology of tl 
beetles and their host plants. The larvae feed on tl 
8 See entry 161 in the bibliography. 
9See entry 154 in the bibliography. 
This paper is published by authority of the State of Illino 
IRS Ch. 127, Par. 58.12. M. P. Nichols is a Research Associa 
International Programs and Studies, University of Illinois. I 
M. Kogan is an Associate Entomologist at the Illinois Natu 
History Survey and Associate Professor at the University 
Illinois College of Agriculture. Dr. G. P. Waldbauer is a Pi 
fessor of Entomology and of Agricultural Entomology at t 
University of Illinois. 
This paper is a contribution of the Illinois Soybean Entomology Team with sup- 
port from the Illinois Natural History Survey, the University of Illinois Interna- 
tional Soybean Program (INTSOY), the University of Illinois Departments of Ento- 
mology and Horticulture, the Illinois Agricultural Experiment Station and the U.S. 
Department of Agriculture through the regional project S-74, the U.S. Agency for 
International Development, and National Science Foundation Grant GB-34718, Soy- 
bean Sub-project. 
Illinois Soybean Entomology Team: 
E. J. Armprust — Biology, Ecology, and Control 
J. K. Bousseman — Taxonomy 
B. J. Forp — Information Storage and Retrieval 
G. L. Goprrry — Taxonomy 
= 
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qPres 
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.R. Jayvcoox — Pollination 
_ Kocan — Host Selection and Nutrition 
. Luckmann — Pest Management 
_ Nicuors — Information Storage and Retrieval 
. Prices — Community Ecology 
. Roserts — Biology and Control 
_ G. Ruzsinx — Ecology, Systems Analysis 
oo} eae 
. K. Sert — Population Genetics 
_ J. Stannard — Taxonomy 
. P. Waxupsaver — Bionomics 
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